Ceramic Coatings in Internal Combustion Engines

  • B. Ineichen
  • C. Klukowski


An investigation was conducted into material and processes with the goal of achieving effective and durable thermal barriers for heavy-duty diesel engine applications. Coating systems aimed at reduced thermal conductivity, erosion- and corrosion resistance were evaluated. Plasma and flame sprayed yttrium stabilized zirconia oxide layers were judged in these tests after surface treatments with and without bond coating. Selected ceramic coated substrates were tested under engine operating conditions in a practical laboratory test to improve the understanding of how surface porosity, coating layer structure and bond strength contribute to the overall performance of thermal barrier systems.

Experiments have shown that sui table mechanical properties of the surface will improve the resistance against erosion and gas diffusion. Insulating materials may improve the performance and durability of advanced heat engines, provided the combustion system, in particular the injection configuration is properly optimised.

A more detailed understanding of thermal barrier coatings performance has been achieved through this program.


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Copyright information

© Elsevier Science Publishers Ltd and MPA Stuttgart 1992

Authors and Affiliations

  • B. Ineichen
    • 1
  • C. Klukowski
    • 1
  1. 1.Internal Combustion Engines LaboratorySwiss Federal Institute of Technology ZurichSwitzerland

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